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Jan; 1, 1929. 1,697,632

E. R.,KUL KA LOCK NUT DEVICE Filed Hay 11, 192? Patented Jan. 1, 1929.

' UN TE ;was

EUGENE a. Kenna-or nnoonmm, nnwxoax, ASSIGNOR '10 c. 1). W091;nLnc'rar'c 00. me, or 'Yonx, N'. Y., A corarona'rron or nnw oak aplie'auon al amy 11,

. sition.

y it in any manner."

" in m 1.

- the configuration of the locking tongues.

' .The lock; nutfll comprises soup-shaped Another object of my.invention is to-provide a lock nut which will not red ire. any.internally threaded partsir' Other objects of my invention will besetforth. in the .following .descri tion and drawings which illustrate-apre erred embodiment thereof it=being understood that the above generalstatement-ofthe objects of my invention'is intended merelyito enerallyexplain the same, and .not-rto limit Fig.- 1 is a sectional view partial1 2m eleval tion showing-the lock nut in-the lo g position, this figure1-1 of Fig. 2.

being a section on' the Fig. 2 is. a top'viewot'the x Fig. 3 is a sidewas. tab- Fig. 4

nut. Fig. 5 is an enlarged detailview. showing 4 The drawings showabolt- B havingathreaded .end 12, which is ap" liedto '.any. suitablememberlli. The beltis :lheldin. positionby' ineans of an ordinary-.-:nut"10.;

member'- which can be made'from .suitable metal either by a. stam"ingjopration or by any other method. hejniember 11 is-provided. with acentral opening {and stamped so as to genera with a series of'tongues".14' whichi'aref8ep'- 14 are provided withnpwardly bent innerends 15. The. in'ner .ends of said-tongues 14 are-not located 'inthesame horizontal plane. On the eontrafim. said tonguesfare;

of the threading at the end of the bolt. ;In other words, the inner endsof thevtongu'es 14 which engage thethreadinglgpmay be considered 'asforming part of a helical line Y which corresponds in pitchand'contourto ing of the bolt B. This firm frictional .for example,- connected toollow the contour 1927- sewn n. -iso,4e.. I

the internal threading of the nut 10, for example}; Hence, the lock nutlllca'n be turned upon the threaded end 12 of the bolt B so as to be,screwed down upon the outer lateral surface of the nut 10, exactlyas'thoughthe' member 11 were provided with an internal threading whichcould en agethe external threading of the bolt B. prefer to makegtleeIilbel' 11 'of pack hardened cold rolled e The tongues 14 areresilient so that when the member 11 is turned with sufiicieiit force,the tongues 14 engage the outer lateral surface of the nut 10 whichcauses the said 'tion so that each of the said tongues has a doublecurvature. Hence, when the said tongues 14. are flattened out their ends15 engage the threading 12 withconsiderable force so that the --=saidtongues secure a firm frictional grip against the outer lateral sur-'face of the nut ,10 anda'lso against the threadprevents the turning ofthe members '11 in the reverse direction, whenthe bolt is 'subto. jarsor the'like. .Assuming that is a perspective view otethe -loch the partsare held in the'vertical position fshownin Fig. 1, when the bottom ofthe lock member 11 contacts with the topof the f'nut 10, the lock member11 canbe then turned .for a; short' distance while the inner ends of theton es. 14 are degressed because they tollow t e helical-three 12. sThis downward pressure uponthe mner-ends of the tongues 14 causes themto buckle downward-4 ly However,-"-thisbuckling; tendency is because thetongues ,have' .con-Z .cave 'ibaseswhose. outer and inner ends aresub'stantifilly in a plane which-is perpendic'w. -l'ar Q -t'o' the-'axisof \the. bolt; Hence, w.the biickling tendency ofthe inner'freeends "of the tongues iskmuch lessthan: if saidton'gues consisted ofstraight line members 1 locking member 11.

.' In. addition, thepressure of the bases of the tongues 14 u n the-to.of the nut 11 tends to .cause sai concave ases to flflattenso that theupwardly curved "inner 14 are forced a'gainst the e stiflness of therelatively ends of the tong itles threading 12'.

the pesos. theshort eurved ands 03f iihe :eonihhxed presslme produced:ny @herfiabtening f ifiheir hses, muses *the said tongues ito engege dvhe 6 great ifmme.

A's :showniihn Fig. A, :fihe were are,

d'lhidk end and dhegy have hemmed edges *whie'h ioerrespond he the sshpf zizhe ifhread of the bolt; Heme a firm etienal 10 1p :upon ifiheflnzead the fboflm is seemed. he device eoufild m'sed a-s :a nut without:Kie -partialg' my imzerrtien; When the ,deyiceis an; Qos'rtion zfihelowest itongue 1.4 :alhuts'fbhe of xfihemut; rand isyxwedged I '15egmirrstjfihe am. While 21? have a special contour as xfihe finer erredof any invention, my invention he straight tongues midis mot-limited tosuch special contour,

2Q save-ms .ilimited iinathe claims". It wiflfbe noted that the tonguesare made :of submaterial, that they are deformed so little when {thedeviee is looked I d jon, that the devfiee can he released 25 by. turmngit the -oposite direction. 4 -..-However,- the mem er 1'1 he readily"removed at any time force dihereto. is the innerrend of eaeh iongzueentem the ibhread .80 and to be inwards the hase of seid thread when them'emher is urged rte-the l'ockfing ggsitiom' This is the downi ectededge offihe end of the ion e does not make an angle msgneet is: verticalaxis of the belt which the-angle made by the adiaeeni: downwardly A ofHence, iihe movement 0f the engaging end eff each tongue ishmobstmfitedby the e5. the adjacent wall of the thread so that said :inner end isfree $0 thrust radially, the angle enema-deb. --the engaging and ofthetongue, with-1: e axis of the bolt. were a ter thenzbhe angle madeEhgoihe wall of the thread 4 withtheaxisof the 1t, @en the enteringend'of the tongue oeuid. substanegamst one 0f the walls -ofthe and itcould not he stressed towards the base of the thread.

I It is obvious the device 11 an be made 32a hymeans efsusdahie ,1 haveshown greiemed of my invention, but

changes and omissions meld hemadewiflront' the base defer-ting itsspirit. I '1. A-ciloeking member an exterior annular portion whose inneris previded a plurality of inwardly extending adapted to nomejfly enga;the threagfigofaboit, emitter-base onsof :sa gees eompnsmg an amidsurface the ends of wdaich with the ad. 66 surface of the member torelatively by Elm: g sufiioient' deadly shown in Fig. 5,.

rtisdearihatnnmemus Jaeent said thread, said inner end bemg' sh: lhaweesuhstanfialbearhagsurfece min st the 420 the mg-e9 :fihmt whenpressure is applied nnsaid tongues-J1me inwardly ex- :tended." newper-lions eofsaiid tongues be- 5mg in ishe same plane 'so that they aressirnu'ltaneonsl y extended when pressure is agphedihoeaiid .member.

9. locking meniber having a :serles ofizassoei-ated whose inner edgeszaresepamted irom \each other, the inneredgesefsaiiddongugesextendingabove the 1 base of theksadd flocking member, the outline ofsaid :ed ges substantially to a helical dine, the inner portions of saidinclined respect to the outer porfiions the inner ends of said rte esand she ed to norenter and engage the three of the bolt.

3. Alocking mem having an exterior ennui-er whose inner is provided with:3, of inwardly 3 :tongues adapted :to engage the threading of a.ho1t,;sa id tongues 'heing arched between their-innerendsrendztheinouteriendsflhe innerends of :saidgfiongnes beinginclined and shaped to figmaliy .enter and engage the of the f 4." Anut-lee member com an annularhody of $11 fiallly :r'igrd material thebase-yonder: of whieh is formed with a receiving opening, iongues madeof sub stantmilymigid material and disposed about said opening, saidtongues hawin difierent inclinations to the axis of said 110 t to bringtheir extremities into a fine, the inner tips oi sa id tongues beinglchamiered to norrneliycontformio the thread of said holt, so that saidztips can enter and said thread long a bearing surface to insurefrictional contact. 1 i

3 5. Ar-nut-locking member com rising an annular-bod; of substantiallyri d material the base of which is formed wit a bolt-re- I reivingopening, tongues made ofsubstanti'al- 1y rig1d materiai, the inner edgesof said tongues-confirming to a heiical line correggndingto thepitehofihe threadof theholt,

' said ton es comprising arched surfaces, said inner .e being shaped tooonionn to the thread of the.bo1t,so 'lihat said inner edges can contactwith said thread along a substanto insure firm frictional 1011' r =6. Annt ioching member oom prising an annular of substantially material Mt.portion of whlkrdis formed 37120 "mee1v1ng= x: 11mg, tonguesdlspose"about said sa'id'ton eshaving helially inner ends to v the thread of thebolt, with one tongue av-' ingiisinnerendinclinedmdhaped tostress a;11:11; on the bolt and toseatin the dofsaidbolttofi'iefionaflyenga saidthread substantially dlstorting when the base of Q to which the bolt isto be locked, that portion 16;. of the inner end of said tongue whichenters and frictionally'en ges the thread of the bolt, when said memlier is forced to the locking position, being inclined and shaped so that1t is adapted to then thrust toward the 2 base of the adjacent portionof said thread along a line WlllCll is unobstructed by the edge of saidadjacent portion of the thread.

In testimony whereof I afiix my signature.

EUGENE R. f

id member abuts the article 1

